|Drumena - Souterrain|
The walls of this little stone fort reach a height of about 1.7m and are about 3m thick. You enter through a very narrow gap, which could well be the original entrance. There is a wider gap in the south side which was probably added later so that the fort could be used as a cattle bawn.
In the centre there are the foundations of some huts, but these are not all that clear - at least one oval structure can be identified. The most interesting feature of this site is the soutterain.
One very odd thing about the site is that it is only halfway up the hill, meaning defensively it would have been hopeless! Any attackers could have got above the fort and rained down missiles into the centre. The map shows another stone fort further up the hill, so perhaps this was just an outpost of that one - or a T.J. Westropp said in the 1920s perhaps some of these structures were not defensive but ritual.
I had returned here on my way home to find the nearby cist, which is quite superb. It is also very difficult to find! I didn't manage it. However, I was able to take some photos of the cashel from slopes above it.
This is an explanation of (and a bit of a disclaimer for) the coordinates I provide.
Where a GPS figure is given this is the master for all other coordinates. According to my Garmin these are quite accurate.
Where there is no GPS figure the 6 figure grid reference is master for the others. This may not be very accurate as it could have come from the OS maps and could have been read by eye. Consequently, all other cordinates are going to have inaccuracies.
The calculation of Longitude and Latitude uses an algorithm that is not 100% accurate. The long/lat figures are used as a basis for calculating the UTM & ITM coordinates. Consequently, UTM & ITM coordinates are slightly out.
UTM is a global coordinate system - Universal Transverse Mercator - that is at the core of the GPS system.
ITM is the new coordinate system - Irish Transverse Mercator - that is more accurate and more GPS friendly than the Irish Grid Reference system. This will be used on the next generation of Irish OS maps.